METHOD FOR REDISTRIBUTION OF POWDER GASES FLOW IN CHANNELS OF MUZZLE BRAKE AND DESIGN OF MUZZLE BRAKE Russian patent published in 2024 - IPC F41F1/08 

FIELD: machine building.

SUBSTANCE: method for redistribution of powder gases flow in channels of muzzle brake, in which in process of formation of pressure field of powder gases increase in density of gas flow due to restriction of directions of their radial expansion in cavity of muzzle brake and organization of stream flows, flow rate of powder gases is increased, the flow of powder gases is accelerated when flowing around the bottom of the projectile into the gap between the cylindrical guide segments, the flow of powder gases is decelerated by the front wall of the muzzle brake body and zones of increased static pressure are formed, which reaches and for a short time exceeds the muzzle pressure of powder gases, the moving powder gases are retained in the cavity of the muzzle brake body to increase the time of their action due to the oncoming movement of PG flows after reflection from the front wall of the brake and circular oncoming motion of PG after exit through the gap between the cylindrical guide segments after the projectile departure from the projectile window. Muzzle brake comprises a body with a coaxially and successively cylindrical part attached to the barrel, a conical part, a cylindrical part with a front wall and a slug opening in it, two pairs of side windows. Openings are made in the conical and second cylindrical parts of the brake housing symmetrically relative to the vertical plane passing through the longitudinal axis of the brake housing. Conical part of brake is made with angle of inclination of generatrix of 14 degrees to longitudinal axis of housing. In the inner cavity of the brake body there are two cylindrical guide segments as a geometrical continuation of the inner cavity of the barrel symmetrically relative to the vertical plane passing through the longitudinal axis of the brake body. Gaps between segments are made uniformly varying from opening angle of 60 degrees at the beginning of conical section to opening angle of 120 degrees in the area of front wall of brake body. On external surface of longitudinal guide segments there are stiffening ribs, which fasten segments with brake body into one body.

EFFECT: increased efficiency of energy potential of powder gas nucleus, reduced recoil of shot.

2 cl, 15 dwg